Fatal error: Call to undefined function mb_ereg_match() in /home/dhhq2/public_html/joomla17/components/com_sef/joomsef.php on line 2735

This error occurred on my regular testing server which has had a few extensions installed so did a fresh install of joomla into a folder. After I confirmed it was working I installed the most recent copy of JoomSEF 4.1.0 (downloaded 9-13).

Same error.

I'm using:
Joomla! 1.7.0
PHP ver 5.3.6
Apache/2.0.63

Please help!

-KJC

I've seen something really similar happen with an extension called magebridge. I've had the best luck so far by selecting "components router" under the extension settings for the magebridge component. Curiously, if you open up the magebridge extension options and use the drop down you do not see an option for "components router". (It ends up being a value of "0" if you edit the mysql table directly.) Ive also found that if you click on the router directly, where it is visible with the list of extensions on the main extensions page, you can change it there and one of the options will be "components router". Maybe selecting this for the extension you are having problems with will help to?

I'm having this same issue. Can you give me some ideas of what I might look for as far as DNS settings and server config that would cause this issue?

I have the exact same issue. Any word on this?